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Hemoglobin derivatives

Hemoglobin derivatives

Blood test
Blood test

Definition:

Hemoglobin derivatives are altered forms of hemoglobin, a protein in red blood cells that moves oxygen and carbon dioxide between the lungs and body tissues.

This article discusses the test used to detect and measure the amount of hemoglobin derivatives in your blood.

Alternative Names:
Methemoglobin; Carboxyhemoglobin; Sulfhemoglobin
How the test is performed:

The test is performed using a small needle to collect a sample of blood from an artery. The sample may be collected from an artery in the wrist, groin, or arm.

Before blood is drawn, the health care provider may test circulation to the hand (if the wrist is the site). After the blood is drawn, pressure applied to the puncture site for a few minutes stops the bleeding.

See also: Blood gases

How to prepare for the test:

No special preparation is needed.

If your child is going to have this test, it may help to explain how the test will feel, and even demonstrate on a doll. Explain the reason for the test. Knowing the "how and why" may reduce the anxiety your child feels.

How the test will feel:

When the needle is inserted to draw blood, you may feel moderate pain, or only a prick or stinging sensation. Afterward, there may be some throbbing.


Review Date: 5/29/2007
Reviewed By: Daniel R Alexander, MD, Department of Internal Medicine, St. Mary's Hospital, Leonardtown, MD. Review provided by VeriMed Healthcare Network.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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